Severe Storms

WW 0440 Status Updates
STATUS REPORT ON WW 440 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 SE AIA TO 10 SW MHN TO 35 SW ANW TO 45 NNE VTN. ..WENDT..06/21/24 ATTN...WFO...LBF...UNR...FSD... STATUS REPORT FOR WS 440 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC005-009-015-017-071-089-091-103-113-115-117-149-171-183- 210340- NE . NEBRASKA COUNTIES INCLUDED ARE ARTHUR BLAINE BOYD BROWN GARFIELD HOLT HOOKER KEYA PAHA LOGAN LOUP MCPHERSON ROCK THOMAS WHEELER SDC023-043-053-123-210340- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE CHARLES MIX DOUGLAS GREGORY TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES Read more

MD 1350 CONCERNING SEVERE THUNDERSTORM WATCH 440... FOR NORTH-CENTRAL NEBRASKA
Mesoscale Discussion 1350 NWS Storm Prediction Center Norman OK 0835 PM CDT Thu Jun 20 2024 Areas affected...North-central Nebraska Concerning...Severe Thunderstorm Watch 440... Valid 210135Z - 210330Z The severe weather threat for Severe Thunderstorm Watch 440 continues. SUMMARY...The threat of severe gusts will continue this evening with a organized bowing segment in Cherry County moving south-southeast along the warm front. Gusts of 60-75 mph appear possible. DISCUSSION...A bowing segment has developed within Cherry County as a result of linear convection interacting with a supercell. This portion of the convective line is also moving along the warm front in northern Nebraska. With generally low MLCIN inflow (per 00Z LBF sounding), this activity will likely continue south-southeast along the boundary. KLNX velocity data suggest gusts of 60-75 mph are possible. Though the supercell farther east in Holt County has become more disorganized over the last few hours, another surge in the line could occur if they are able to interact later this evening. Severe gusts will the primary hazard along with brief circulations/tornadoes near the warm front. Large-hail potential should remain isolated given convective mode. A watch may be needed east of WW440 should the supercell in Holt County maintains its intensity. ..Wendt.. 06/21/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OAX...LBF...UNR... LAT...LON 42880107 43000069 42559852 42389818 42009829 41909958 42040074 42190125 42880107 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 Read more

MD 1349 CONCERNING SEVERE THUNDERSTORM WATCH 440... FOR WESTERN INTO CENTRAL NEBRASKA
Mesoscale Discussion 1349 NWS Storm Prediction Center Norman OK 0633 PM CDT Thu Jun 20 2024 Areas affected...Western into central Nebraska Concerning...Severe Thunderstorm Watch 440... Valid 202333Z - 210100Z The severe weather threat for Severe Thunderstorm Watch 440 continues. SUMMARY...Severe winds will generally become the predominant threat in western/central Nebraska with time as an MCS moves east. Storms favorably interacting with the warm front, particularly those of discrete mode, will still pose some risk of a tornado and large hail. DISCUSSION...Storms continue to grow upscale into an MCS in western Nebraska. Severe winds will likely be on the increase with this activity--the Alliance, NE ASOS recently recorded a 70 kt gust. Temperatures ahead of this line of storms remain in the upper 80s to low 90s F and the low-level jet should increase over the next few hours, aiding in storm maintenance. Along the warm front, more discrete storms in northwest Cherry County and east of Ainsworth continue. These storms will pose the greatest risk for large hail and possibly a tornado should they interact favorably with the warm front. The storm east of Ainsworth produced one reported tornado so far. The storm has become more HP/messy in character; however, the mesocyclone has periodically intensified over the last couple of hours as well. ..Wendt.. 06/20/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...CYS... LAT...LON 41720309 42130281 42810268 42960082 42589928 42239893 42129931 42240058 41810156 41610247 41720309 Read more

WW 0440 Status Updates
STATUS REPORT ON WW 440 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E AIA TO 45 WNW MHN TO 60 NW MHN TO 40 WNW VTN TO 45 SSE PHP. ..WENDT..06/21/24 ATTN...WFO...LBF...UNR...FSD... STATUS REPORT FOR WS 440 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC005-009-015-017-031-071-075-089-091-103-113-115-117-149-171- 183-210140- NE . NEBRASKA COUNTIES INCLUDED ARE ARTHUR BLAINE BOYD BROWN CHERRY GARFIELD GRANT HOLT HOOKER KEYA PAHA LOGAN LOUP MCPHERSON ROCK THOMAS WHEELER SDC023-043-053-121-123-210140- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE CHARLES MIX DOUGLAS GREGORY TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0440 Status Updates
STATUS REPORT ON WW 440 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E AIA TO 45 WNW MHN TO 60 NW MHN TO 40 WNW VTN TO 45 SSE PHP. ..WENDT..06/21/24 ATTN...WFO...LBF...UNR...FSD... STATUS REPORT FOR WS 440 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC005-009-015-017-031-071-075-089-091-103-113-115-117-149-171- 183-210140- NE . NEBRASKA COUNTIES INCLUDED ARE ARTHUR BLAINE BOYD BROWN CHERRY GARFIELD GRANT HOLT HOOKER KEYA PAHA LOGAN LOUP MCPHERSON ROCK THOMAS WHEELER SDC023-043-053-121-123-210140- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE CHARLES MIX DOUGLAS GREGORY TODD TRIPP THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 0439 Status Updates
STATUS REPORT ON WW 439 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NE DEN TO 40 WNW AKO TO 20 W SNY TO 20 NW SNY TO 20 SSE AIA TO 35 ENE AIA TO 50 ENE AIA. ..WENDT..06/21/24 ATTN...WFO...BOU...CYS...LBF...UNR... STATUS REPORT FOR WS 439 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-115-123-210140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN SEDGWICK WELD NEC033-049-069-123-210140- NE . NEBRASKA COUNTIES INCLUDED ARE CHEYENNE DEUEL GARDEN MORRILL THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 439 SEVERE TSTM CO NE SD WY 201920Z - 210100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 439 NWS Storm Prediction Center Norman OK 120 PM MDT Thu Jun 20 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Nebraska Panhandle Southwest South Dakota Southeast Wyoming * Effective this Thursday afternoon and evening from 120 PM until 700 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible A tornado or two possible SUMMARY...Thunderstorms will intensify this afternoon over southeast Wyoming and northeast Colorado and spread eastward through the early evening. Supercells capable of very large hail and damaging wind gusts are the main concern. An isolated tornado and/or landspout or two is also possible. The severe thunderstorm watch area is approximately along and 95 statute miles north and south of a line from 40 miles northwest of Cheyenne WY to 35 miles east northeast of Alliance NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 438... AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ...Hart Read more